This could run a little long but iM trying to be.

KEITHDAVIS1

MEMBER
2004 JEEP LIBERTY
143,246 MILES

This could run a little long but im trying to be specific with whats already been done. My v6 liberty has been not starting off and on for about 3 weeks now. The first time we changed the battery and spliced in new neg/pos clamps due to corrosion, it ran for 2 days then would not crank(ohm reading good at battery). Next a shadetree mech took starter in to check, damaged pos post so went ahead and replaced vechile started right up ran for 2 days and quit. Replaced starter relay with no change, ignition switch with no change. I have checked power to steering column is good replaced spark plugs(node twice the gap called for so they were way overdue). I checked the pdc today and it shows no power to the starter fuse(blue) and the injector fuse(tan) reading was 0.0 all the way through key rotation. I also believe one or more injectors are shorting out. What could be causing the no power at the fuses in the pdc and were would I likel;y find the short or check for it on the injectors. Please help running out of hair to pull out on this problem.

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Ohm reading?

Power to the power distribution center is from a fusible link. They need to be checked.

You should have key on power to the injectors.

The starter fuse is only hot in the start position. Did you check that?

Roy

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Sunday, November 4th, 2012 AT 6:38 PM

KEITHDAVIS1

MEMBER
3 POSTS

Ohm readings to both fuses are 0.0, when I apply power to the injector fuse via jumper wire I get a buzzing sound around the idle air control. I did run start the starter fuse and still get 0.0 reading. Checking the fusible link now, Would like to know were the gound to body/engine locations are so I can check to make sure everything is free of dirt. Any site or sources that you all could point me to I would be grateful

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Tuesday, November 6th, 2012 AT 12:30 AM

KEITHDAVIS1

MEMBER
3 POSTS

I have now have correctly(thank you by the way) tested starter and injector fuses along with the thinck green wire fusible link connected to the pdc. All are showing go power except when I engage the "run" position to the key the injectors seem to start to "cycle" but the power drops out and goes to 0.0. I have checked condition of pdc and all the wires running into the box. And the slots for the fuses/relays, all seem to be working and clean. I forgot to mention in my first post adapter c1 in the pcm had been accidentally forced of the module. This damaged the locking mechanism but we have been able to brace it (just for testing I will repair through a shop). I have checked all fuses of the interior again along with ignition switch. I will mention when we were messing with bridging the starter to get it to start/runit would only crank but if I applied the key run postition with it. The car would fire right up. Any ideas would be welcomed.

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Tuesday, November 6th, 2012 AT 8:33 PM